Hair treatment device



FIG. 1 is a top perspective view of a hair treatment device showing my new design;

FIG. 2 is a bottom perspective view thereof;

FIG. 3 is a top perspective view of a second embodiment of the design shown in FIG. 1; and,

FIG. 4 is a bottom perspective view thereof.

The broken lines which defines the bounds of the claimed design forms no part thereof. The broken lines showing the indicia are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for a hair treatment device, as shown and described. 